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Sequential Bond Dissociation Free Energies (kJ/mol) of M+(L)x complexes for crown ethers. Uncertainties in parentheses [61].
| M+ | L = 12-crown-4 | L = 15-crown-5 | L = 18-crown-6 | |||
|---|---|---|---|---|---|---|
| x = 1 | x = 2 | x = 1 | x = 2 | x = 1 | x = 2 | |
| Li+ | 372 (51) | 135 (10) | - | - | - | - |
| Na+ | 252 (13) | 144 (10) | 294 (18) | 118 (10) | 296 (19) | - |
| K+ | 189 (12) | 135 (10) | 205 (15) | 138 (10) | 234 (13) | - |
| Rb+ | 93 (13) | 128 (10) | 114 (7) | 133 (10) | 191 (13) | - |
| Cs+ | 85 (9) | 110 (10) | 100 (6) | 125 (10) | 168 (9) | 120 (10) |
